タッチを有効にする

registerWithTouchDispatcherメソッド追加

- (void) registerWithTouchDispatcher {
    [[[CCDirector sharedDirector] touchDispatcher]
      addTargetedDelegate:self priority:0 swallowsTouches:YES];
}

ccTouchBeganメソッド追加

- (BOOL)ccTouchBegan:(UITouch *)touch withEvent:(UIEvent *)event {
    return YES;
}

touchEnabled設定

        self.touchEnabled = YES;